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Is normalize-url ESM-only? Can you require() it?

Normalize a URL

Last verified Sep 9, 2026 against normalize-url@9.0.1. Markdown · JSON

ESM-only ESM-only since 7.0.0 — last CommonJS version is 6.1.0

normalize-url dropped its CommonJS build in 7.0.0 (July 2021). The last version with a plain require()-able CommonJS entry is 6.1.0, published Jun 22, 2021; it declares support for Node.js >=10.

On Node.js 20.19+, 22.12+ and newer, require("normalize-url") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Node.js 18 has no require(esm), and normalize-url@9.0.1 declares Node.js >=20, so 18 is outside its supported range anyway.

normalize-url@9.0.1 declares engines ">=20", so Node.js 18 is outside its supported range regardless of module format.

What to do

  1. On Node.js 20.19+, 22.12+ and newer, require("normalize-url") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.
  2. From a CommonJS file, use a dynamic import inside an async function: const normalizeUrl = await import("normalize-url"). That works on every Node.js version the package supports (>=20).
  3. If you need a synchronous require() or run Node.js 18: npm install normalize-url@6.1.0, the last CommonJS release (published Jun 22, 2021); it declares Node.js >=10.
  4. normalize-url@9.0.1 declares engines ">=20", so Node.js 18 is unsupported regardless: upgrade Node.js or pin an older release.
  5. TypeScript: types are bundled; install nothing extra.
Latest
9.0.1 (May 20, 2026)
Module format
ESM-only
Last CommonJS version
6.1.0
ESM-only since
7.0.0 (Jul 9, 2021)
TypeScript types
Bundled
Node engines
>=20
Weekly downloads
32.2M
License
MIT

Does normalize-url@9.0.1 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("normalize-url") from a CommonJS file and import "normalize-url" from an ES module.

Runtimerequire("normalize-url")import "normalize-url"
Node.js 18✗ failsERR_REQUIRE_ESM✓ works
Node.js 20✓ works✓ works
Node.js 22✓ works✓ works
Node.js 24✓ works✓ works
Node.js 26✓ works✓ works
Bun 1.4.0✓ works✓ works

How to import normalize-url

ES modules (import)

import * as normalizeUrl from "normalize-url";

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS (require)

// Node.js 20.19+, 22.12+ and newer (verified):
const normalizeUrl = require("normalize-url");

// Any Node.js version the package supports (>=20), from an async function:
async function main() {
  const normalizeUrl = await import("normalize-url");
}

// Or pin the last CommonJS release (declares Node.js >=10):
// npm install normalize-url@6.1.0

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (57 versions; the newest 57 shown).

VersionsFormatFirst published
7.0.0 – 9.0.1ESM-onlyJul 9, 2021
1.0.0 – 6.1.0CommonJSJan 11, 2015

Frequently asked

Is normalize-url ESM-only?

normalize-url@9.0.1 is ESM-only. normalize-url dropped its CommonJS build in 7.0.0 (July 2021). The last version with a plain require()-able CommonJS entry is 6.1.0, published Jun 22, 2021; it declares support for Node.js >=10.

Which version of normalize-url still supports CommonJS / require()?

6.1.0 is the last version of normalize-url with a CommonJS build; it declares Node.js >=10. Install it with "npm install normalize-url@6.1.0". Every version from 7.0.0 on is ESM-only.

How do I use normalize-url from a CommonJS file?

From a CommonJS file, use a dynamic import inside an async function: const normalizeUrl = await import("normalize-url"). That works on every Node.js version the package supports (>=20). On Node.js 20.19+, 22.12+ and newer, require("normalize-url") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Alternatively pin normalize-url@6.1.0 (declares Node.js >=10).

Does normalize-url work in Bun?

Yes. import "normalize-url" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does normalize-url ship TypeScript types?

Yes. normalize-url bundles its own type declarations; no @types package is needed.

Links

Other esm-only packages

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